Thailand. (Air Mail). 1949. Air Mail envelope addressed to the United States bearing SG 296, 50s grey and orange, SG 315, 20s purple-brown (pair) and SG 318, 20b green and blue tied by Bangkok/ GPO date stamp '31st July' with hand-stamp 'Received Aug 9 1949' on face.
Nice cover paying the 2 baht 90 satang Air Mail rate.